Lubricating mechanism



Dec. 4, 1928.

R. E. LANGMACK LUBRICATING MECHANISM Filed Jul Patented Dec. 4, 1928.

ROY E. LANGMACK, or MI vNnAroLIsMnvNEsom.

LUBRICATI NG MECHANISM.

Application filed July 5,

This invention relates to lubricating devices for internal combustion engines, and

the primary object is to provide means of a novel, practical and efficient nature for lu bricating the upper portion of each piston of the engine, which port-ion of the piston usually contacts with the cylinder walls in a relatively dry state, because of the piston rings which prevent the splash fed oil from reaching this area of the piston and cylinders. The objections and di'l'liculties resulting from thelack of proper lubrication in this comparatively dry region are many, and among'them may be mentioned the following: slapping of the piston; hard starting, due to the increased friction; burning of the cylinder walls, due to dry condition; premature wearing out of piston rings and uneven wear on cylinder walls, requiring early replacement of new rings and regrinding of cylinders, etc. A' further object is to provide means forautomatically startingv or opening this lubricating system, at any predetermined speed of the motor, so that the pistons will only receive the additional lubricant when most needed, and not when operating at slow speeds, at which time the normal orusual splash feed, from the crank case, may be suflicient. Further and more specific objects will be disclosed in thecourse of the following specification, reference being had tothe accompanying drawing, in which:

Fig. 1. is a side elevation of a conventional gasoline engine, such used in motor vehicles, which incorporates my invention.

is a sectional plan view, about as" Fig. 2

v on the line 2-2 in Fig. 1, but with various parts omitted. Y I

Fig. 3 is an enlarged sectional elevation about as on the line 33 in Fig. 1.

Fig. 4 is a detail plan view, partly in section, of the control and indicating unit em ployed in the system Fig. 5 is a plan elevation of the unit as shown in Fig. 4.

Fig. 6 as a sectional detail View on the line 6-6 in Fig. 4. i

Referring'to the drawing more particularly and by reference characters A designates an internal combustion engine, having a series of cylinders B, in which reciprocate pistons C, connected to the crank shaft D by piston rods E, all of common and well known construction. The usual method of luhri i The pipe section 41* be close to the upper end of .1927. Serial No. 203,519.

eating the contacting areas of the pistons and cylinders is to provide the crank casewith a body of oil, which is thrown by the cranks 0t the'shaft up into the cylinders, and to prevent oil from seeping up-past the pistons, which would result infouling of the spark plugs, poor compression, and faulty ignition,

it is also customary-and necessary to provide the pistons witlrrings, such as F. And as to this construction, I have no changesto make, in view of. the universal acceptance and use thereof in practically all motor cars. But, notwithstanding the popularity and efliciency of this type of engine, it does have the serious objections above order to eliminate these defects, I provide a force'feed method of lubricating the aforesaid dry area, and the same will now be set forth in detail. v

A pipe 4 extends down into a low point ENTOFFICB'T noted, and in of the. crank case or oil pan of the engine.

and is providedor connected with a pump, indicated by dottedlines 6in Fig. 1, which has'gtor itsiunction'to draw oil into the pipe, from the oil r eservoir,fan'd into the pipe 4.. 1 g

extends up to the usual oil gage (not shown) but has a T-coupling 4 which is connected by ashort, pipe 4 to a valve shell or cylinder 4, secured as b bracket 4 to the engine A.-- The shell 4 'has an outlet connection 1 with which may be connected (as shown infFig. 1) a pipe 43 leading to the second oil gage, if desired. The pipe 41" is connected with a loop pipe 7, which encircles theengine, and which has discharge pipe 8, provided with a valve 9, for returning the unused oil to the reservoir in-the crankcase. The cylinders B communicate with oppositepipes of the loop 7, through nipples orshort whereby the oil may be conducted from the pipes 7 to the interior of the cylinders.

It mayhere be noted that the connections 10 are so'located in the cylinder walls B that they will never be uncovered by the pistons, and thus the pressure in the loop 7 will alwa s remain substantially constant, when the valve unit 4 is opeinas in Fig. 6. 'And when each piston is in its lowermost position, as shown in Fig.3, the oil ducts 10 will the piston, and will have been traversed by the piston rings F as well as the upper portion ofthe piston.

The valve 4 controls the'supply andiprespumping it up sure oi oil to the ducts L0,,and thevalve 9, while as an: ordinary haind :vallve, may be a pressure, which by being properly adjustedwill con trol and regulate the supply "andpressure of the discharged or return oil, and thus by being adjusted with respect to the valve 4 V will permit a very sensitive oil feed adjust the ducts 11;

ment to be had. 7 The valve shell 4 has a patr ot diametrical 1y opposed, ducts 11, which comn'i'unicate with the pipes. 4*? and 4". A core or piston 12 rot-atably carried in the shell and has a shaft 1 3' which projects out through the head Maud: has a; crank arm 15 at its outer end This alrnr connected by a link bar 1J6 to the speed fitljllfitillgfill'ln 17 carburetor 18 of the motor. accelerator bar 19 moved, to open the gas value,- it; will also move the bar "16 to turn the valve: piston 12. This piston has a pair o ri'opposed peripheral channels 20; connected by a diametrical hole 21, thus forming a substantially Z-sha .ed' conduit'for connecting 'Rhposition of the piston 12 witlurespect to; the arm 1V5 may be adjusted in any suitable manner, as by a set screw 22, and the position of the piston is indicated by a: pointer 23, which is mounted so that it can be read with respect to a scale 24. This scale is: conveniently marked with graduatioiis' of 0 60, indicatingthe miles per 7 hour at which it is dlesire'dto have the oil to start feeding-q Thus, with the pointer at 30, engine is not running, ning at pe d ofthirty miles per hour or {more the teed will be effected, as any speed overthat setrwillkee the channels'QO in communication with t be understood that the reason for thisrpredetermined range of operation is that there islittle or no needi'for this feed when the engine is running at if the device "is set as in Fig.6, when the is sufficient,

in itself, to lubricate the pistons.-

V Misunderstood that suitable modifications may be made in the general design and structuraldetails of tlieinvention as herein shown and descr1bed,prov1ded, however, that and scope of the appended'cl'aims.

L H'avin now therefore fully shown and' reducing or automatic valve,

of the Thus,:, when the then when it is runslow speeds, at which times the customary splash feed" described ny invention, what I {claim to be new and desire to protect byLetters Patent 1s:

dcr and .a piston in 1, The combination with an internal combasumeagine having acarbureter, a cylinthe cylinder, of meansfor adjusting the carhureter to control the speed of the engine, a conduit adapted to contain oil under pressure and communicating Glfll surface of the piston, avalvel 1n the conduit, means adjustable simultaneously with the carburetor adjusting ineans for opening the conduit valve upon a predcter V with the cylinder at a, P0111137 where it will conduct a lubricant tothe upper peri'phy mined adjustment "of the carbureter, and

means for regulating the v lve: adjusting means whereby the valve may be caused to open-at any selected predetermined speed of the engine as determined by the carbureter adjusting means, M r

' 2. The comhinationwith an internal bustion engine having a carbureterl,-, a cylin der and a piston in the cylinder, of means-for a adjusting the carburetor to, control the speed ofthe eng ne, a conduit adapted 'to icontaiu oil under pressure and communicating with the cylinder at a point where it will conduct a lubricant to the upper peripheral surface v j of the piston, a valve in thepcoiiduit, and j i means adjustable simultaneously with the carburetor adjusting conduit valve aftera predeterminednadjust' ment of the carbureter has first been efl'ected, said valve adjusting means having-a scale for indicating the: approximate engine speed, at which it will openwhen in operation, as determined by the carbureter adjusting means. e ducts 11'. It will The combination with an internal conimeans for opening the bustionx engine having afseries of cylinders,

of conduit having ducts communicating with the cylinders, said conduit being circuitously connected with the oil reservoir of 1 the engine, as valve havinga rotatablccore .tor controlling the flow otfoilythrough the conduit andto said: ducts, andum "actuator member for oscillating the core,: aud means for ad ustingthe operative position ofgthexf mm with i espectto the actuator member; said mod fications come w thm the spirit In testiinony'whereof I affix my signature. 

